Ductor roller adjustment and method



June 21, 1949. H. E. PEYREBRUNE 1,474,160

DUCTOR ROLLER ADJUSTMENT AND METHOD v Filed May 9, 1947 IN VEN TOR. y A/wr/ fg rcjruae Patented June 21, 1949 I t 2,4,16

UNITED STATES PATENT OFFICE DUCTOR ROLLER ADJUSTMENT AND METHOD Henri E. Peyrebrune, River Forest, 111., assignor, by mesne assignments, to Miehle Printing Press and Manufacturing Company, Chicago, Ill., a' corporation of Delaware Application May 9, 1947, Serial No. 746,992 2 Claims. (Cl. 101-348) The invention relates to inking mechanism for anism for the ductor roller and which is shown in printing presses and has reference in particular to associated relation with the ink fountain roller improvements in the method of and means for and an ink distributing drum; v operating the ductor roller of said mechanism Figure 21s a partial, sectional view taken from which will provide for a plurality of adjustments 5 the top of Figure 1 and illustrating the eccentric of said roller to control the conveyance of ink supporting and mounting means for the ductor from the fountain to the ink distributing unit of roller, and th press, Figure 3 is a detail view in section of one of the More specifically, the invention concerns mecheccentric bearings and adjusting means shown in anism for actuating the ductor roller and which Figures 1 and 2. mechanism will include means for convenient ad- Referring now to the drawings, the ductor roller justment of the pivot aXis of the supporting arms operating mechanism selected for illustrating the for the ductor roller in order to accommodate invention is disclosed in associated relation with rollers of different diameters and the method of ink fountain structure generally designated by so doing. Any variation in the diameter of the numeral l0 and which includes the fountain roller ductor roller will result in improper contact and the ink fountain structure being suitably sup therefore inadequate ink conveyance. Differported by th rame l2 of the inking mechanism ences in roller diameter may be due to inaccuracy structure. A conventional ink distributing roller in manufacture or to the grinding down of the or drum I3 is also shown in Figure 1, the same roller because of uneven surface wear or as a rebeing journalled by shaft l4 sult of extended use in operation. Also in the The ductor roller operating cam l5 may be purchase of composition covered rollers wherein mounted concentric with this shaft, but not to certain diameters are specified, it very often haprotate therewith. The driving means for this cam pens that the size of the new rollers will vary to is Omitted because t forms no p t Of the present such an extent that a different setting is required 5 invention- However, it ust be understood that to overcome the inaccuracy in the roller diameter. n o venti nal pr ss s o he cl ss t wh h my By the provision of means whereby the supporting invention applies, the ductor r ller Operating cam arms for the ductor rollers can be adjusted so that runs considerably SIOWBI than y of the k disany variation within reasonable limits in the diributin rollers or drums, the arr n m n of ameter of the roller may be overcome, the practhe cam l5, as shown by way of example in Figure tical use or life of the roller can be materially 1, must therefore be such that while it may be prolonged and proper ink conveyance can be obmounted concentric with the shaft I4, the cam l5 tained at all times during use. must be free on this shaft and driven at a speed Therefore an object of the invention resides in different to the shaft. the provision of supporting arms for the ductor The ductor roller I6 is adapted to have oscilroller of inking mechanism wherein the ductor lating movement to alternately contact rollers H roller is eccentrically mounted on the arms for and I3, whereby ink is transferred from the former adjustment purposes and wherein the arms are to the latter for distribution by a conventional ink eccentrically mounted in the frame of the press distributing system which may include rider also for adjustment purposes so that proper conrollers l1, vibrating drum I8 and other rollers tact can be obtained and maintained with respect whereby a finely distributed film of ink is eventuto the fountain roller and an ink distribution drum ally applied to the printing plate on the plate or the like. cylinder, not shown.

With these and various other objects in view, the Th ductor roller la is carried by arms 2 the invention may consist of certain novel features roller being journalled in said arms by eccentriof construction and operation, as will be more fully cally adjustable means to be presently described.

described and particularly pointed out in the The opposite ends of the arms 20 are supported specification, drawings and claims appended by shaft 2| and secured thereto preferably by hereto. means of the pins 22, so that oscillating move- In the drawings which illustrate one preferred ment of the shaft is imparted to both supportembodiment of the invention and wherein like ing arms to cause oscillating movement of the reference characters are used to designate like ductor roller l6. Shaft 2| is journalled at its parts respective ends by the eccentric bearing members Figure 1 is a side elevational view, parts being 23, each member being suitably mounted for shown in ti Of the P nt p in m hrotation in the frame 12 of the fountain structure and having worm wheel teeth 24 formed in jects beyond the cap 25 and is squared for the purpose of receiving a crank or similar tool which is thereby operatively connected with the worm gear 26. It will be seen that upon rotation of the latter by means of the squared stud 28, the respective eccentric member isjrotated to adjust the location of shaft 2| and thus the pivot axis of the supporting arms '20 supporting ductor roller 6. b

The cam l mounted to rotate'freely on the shaft of the ink distributing roller I3 serves the function of oscillating the shaft 2|. The'means which connects shaft 2| with said cam includes a floating lever 29 supported by shaft 2| and carrying at its depending free end the cam roller 30 adapted to contact cam l5. Floating lever 29 is loose on shaft 2| and movement of the lever is imparted to shaft 2| through the medium of an actuating lever 3|. Said lever 3| is suitably fixed to shaft 2| by the pin 32 and at its free dependingend the lever is formed with a. stop 33 adapted to contact a companion stop 34 provided on floating lever 29 at a point intermediate the ends of said lever. Theactuating lever 3| is yieldingly biased in a direction toward floating lever 29 by the coil spring 35, carried by the rod 36 which is pivoted at 31 to the actuating lever 3|. The opposite end of rod 36 is slidably supported by the boss 38 on theframe l2 and thus the coil spring 35 is backed by this stationary boss 38 so that its resilient tension is exerted on devices do not come within the scope of my invention.

A preferred procedure for setting the ductor roller consists in the following steps:

First, as viewed in Figure 1, the eccentric bearing members 23 are rotated by means of the worm 26 until the eccentricity of these members ,is' all the way up, in other words, until the linear displacement of the ductor roller axis A from C of shaft 2| is a maximum.

A deep scribe line, not shown, extends preferabl across the width of the eccentric 44 in a predetermined position with relation to other scribe lines provided on both sides of the arms 42 in which the eccentrics 44 operate.

By loosening the nuts 46 and turning the studs 45, by means of the square ends 41, these actuating lever 3| maintaining its stop 33' in 7 contact with stop 34 of the lever 29 and thus maintaining the floating lever 29 with-cam roller 30 in contact with cam I5.

The ductor roller I6 is provided with journalling portions 40 at each end thereof, which portions .are received by the U-shaped sockets 4| comprising inwardly extending portions formed integral with its respective arm42.' The arms 42 are pivotally secured to their supporting-arms 20, the former being located at the inside surface of the supporting arms and being pivotally secured thereto by the threaded pivot pins or'the like 43. The position of each arm 42 on its supporting arm 20 is determined by the eccentric 44 having coacting relation with arm 42 and being carried by its sup orting arm 20 through the medium of stud shaft 45. The stud shaft has a threaded extending end which receives'the lock nut 46 by means of which the eccentric 44 may be locked to its supporting arm 20 in desired adjusted position whereby to locate arm-42 in its position with respect to arm 20. The said endof the stud shaft 45 is squared as at 41 for receiving a crank or similar tool whereby. to eflfect f turning of the eccentric 44 for adjustment pur poses when the nut 46 is loosened.

Assuming that a, new or ground down ductor roller l6 has been inserted in the U-shaped sockets 4| provided therefor and it is desired to make adjustments in the apparatus of the invention for correctly setting the ductor roller with respect to the fountain and ink distributing rollers. It will be understood of course that the ductor roller journals 40- are locked in position within their respective'sockets 4| by any conventional means, not illustrated, because such the ductor roller |6 contacts the ink distributing, 1. e. vibrating roller |3.

Thereupon, by means of the worms 26 and eccentric bearings 23, the ductor roller I6 is set with relation to the distributing roller l3, that is to say, the extent of contact of the ductor roller with the roller I3 is established by engaging and turning the square studs 28 of said worms.

After this contact has been established, the press is again advanced slowly until the ductor roller l6 has moved into contact with the ink fountain roller The extent of contact of the ductor roller IS with the fountain roller is then adjusted by means of the eccentrics 44 by turning the studs 45 to the desired extent by loosening the nuts 45 and engaging the squares 41.

In operation of the ductor roller mechanism disclosed in the drawings it will be understood that rotation of cam |5 during operation of the press will cause oscillating movement of the floating lever '29, which movement is imparted to actuating lever 3| as a result of the coaeting relation which these levers have through stops 33 and 34. When lever 29 is actuated in a counterclockwise direction by the high part of cam |5 such movement is imparted to lever 3| against the tension of coil spring 35. Returning movement of lever 3| is effected by said coil spring which acts through the stops to maintain lever 29 in contact with said cam I5. The oscillating movement thus impartedto pivot shaft 2| is transmitted through supporting arm's 20 to ductor roller i6 which thereby alternately contacts with fountain roller II and distributing roller l3 for the purpose of supplying ink from the ink fountain to said distributing roller.

It shall be understood that the usefulness of my invention is not limited to inking mechanism for printing presses,- sinceit can be applied to any class of mechanism whereby a fluid substance is to be transmitted intermittently from a source of supply to a receiving member, nor shall the invention be restricted to constructional details of the particular embodiment thereof illustrated by the drawings, as various other forms of the device will of course be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims.

What I claim is:

1. In an inking mechanism for printing presses, the combination of anink supply member, an ink distributing roller system, a ductor roller for conveying ink from said member to said system,

means for intermittently actuating the ductor roller and including a supporting shaft, arms mounted on said shaft and providing bearing adjustable eccentric members arranged adjacent each end of said shaft, means for actuating said eccentric members to thereby establish the effective radius of the ductor roller axis in order to vary the degree of contact of the ductor roller with the distributing roller, and additional, in dependently operable eccentric members associated with said arms to provide adjustable bearing means for the ductor roller to thereby vary its degree of surface contact with said ink supply member independent of the setting between the ductor roller and the distributing roller, and by maintaining the setting relation between said latter rollers undisturbed.

2. The method of accomplishing the setting of a ductor roller in an inking mechanism for proper contact relation with its associated ink supply member and ink distributing element, and wherein the ductor roller is mounted for oscillating movement by adjustable supporting means, including the steps of bringing the ductor roller into a neutral position, in spaced relation with respect to said member and said element, estab- REFERENCES CITED The following referemces are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 870,997 Sauer Nov. 12, 1907 960,004 Droitcour May 31, 1910 1,343,931 Raahe June 22, 1920 1,982,830 Richter Dec. 4, 1934 2,092,461 Luehrs Sept. '7, 1937 

